import http.client

conn = http.client.HTTPConnection("www,ems,com,cn")

payload = "{\n\t\"content\":\"dawd\",\n\t\"code\":\"dawdaw\",\n\t\"courier\":\"dawdaw\"\n}"

headers = {
    'user-agent': "Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/88.0.4324.150 Safari/537.36",
    'Host': "www.ems.com.cn",
    'Referer': "https://www.ems.com.cn/pc/main/new",
    'Cookie': "SESSION=f4538ad0-ad3e-432a-9b25-dfbe74e59288",
    'Cache-Control': "no-cache",
    'Postman-Token': "845d62dd-0c02-4959-a1f9-4244508f5fcd"
    }

conn.request("GET", "pc,login,index", payload, headers)

res = conn.getresponse()
data = res.read()

print(data.decode("utf-8"))